CORESET Sub-Band Mapping for eRedCap SIB Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Reduced-capability UEs, such as eRedCap UEs, are unable to monitor frequency ranges spanned by conventional control resource sets (CORESETs) due to their limited processing capabilities, leading to challenges in receiving system information blocks (SIBs).
Innovation Solution
The method involves selecting or mapping sub-bands within a larger CORESET based on a physical cell identifier (PCID) for eRedCap UEs to monitor control signaling, allowing them to receive SIBs by configuring or mapping CORESETs to smaller frequency ranges suitable for their capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional CORESETs are used for all UEs, then full-capability UEs can receive control information, but reduced-capability UEs cannot monitor the frequency range
Solution Approach 1:
The patent segments the frequency range of a CORESET into multiple sub-bands. Reduced-capability UEs are configured to monitor only specific sub-bands within the CORESET frequency range, rather than the entire range. This segmentation allows the system to support both full-capability and reduced-capability UEs using the same CORESET configuration, resolving the contradiction between adaptability and configuration complexity.
2Adaptability or versatility
If CORESET frequency range is reduced for eRedCap UEs, then they can monitor control signaling, but full-capability UEs cannot utilize the full frequency range
Solution Approach 1:
The patent applies local quality by assigning different monitoring capabilities to different UE types within the same CORESET. Full-capability UEs can monitor the entire CORESET frequency range for optimal control information reception, while reduced-capability UEs monitor only specific sub-bands. This differentiated approach allows each UE type to operate at its optimal performance level without compromising the other, resolving the contradiction between adaptability and productivity.
3Reliability
If sub-band monitoring is implemented for reduced-capability UEs, then they can receive control signaling, but additional configuration overhead is introduced
Solution Approach 1:
The patent implements a universal CORESET configuration that serves both full-capability and reduced-capability UEs. The same CORESET parameters (frequency range, bandwidth, location) are configured for all UEs, but reduced-capability UEs utilize only specific sub-bands within this universal configuration. This multi-functional approach allows a single configuration to support multiple UE types reliably, reducing overall configuration overhead while maintaining control signaling reception reliability for all UE types.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) is configured to receive, from a network entity, a control message indicating a control resource set (CORESET), where the CORESET is associated with a downlink bandwidth part (BWP) spanning a set of sub-bands in a frequency domain. The UE is configured to select a sub-band of the set of sub-bands based on a physical cell identifier associated with the UE, and monitor the selected sub-band for control signaling that schedules the UE to receive a system information block (SIB). The UE may then receive a second control message from the network entity within the selected sub-band based on monitoring the selected sub-band, where the second control message schedules the UE to receive the SIB.